[LTP] [PATCH v2] block_dev: Convert to new API

[Ricardo B. Marliere]

Signed-off-by: Ricardo B. Marliere <rbm@suse.com>
---
v1->v2:
- Added ifdef for including genhd.h in older kernels
- Removed unused pointer
- Fixed `make check` linter warnings
- Link to v1: https://lore.kernel.org/r/20241018-block_dev-v1-1-f1f98dfebb6d@suse.com
v1:
- Tested against v6.11
---
 .../block/block_dev_kernel/ltp_block_dev.c         |  4 +-
 .../block/block_dev_user/block_dev.c               | 77 +++++++++-------------
 2 files changed, 34 insertions(+), 47 deletions(-)

diff --git a/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c b/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c
index 17047c0d5ae3f6556f3fa4b0eb2a17a86e5f05a6..5ce145c9f87d1c8a13c32505595990145d24a928 100644
--- a/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c
+++ b/testcases/kernel/device-drivers/block/block_dev_kernel/ltp_block_dev.c
@@ -12,8 +12,10 @@
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/fs.h>
-#include <linux/genhd.h>
 #include <linux/blkdev.h>
+#ifndef DISK_NAME_LEN
+#include <linux/genhd.h>
+#endif
 
 MODULE_AUTHOR("Márton Németh <nm127@freemail.hu>");
 MODULE_AUTHOR("Copyright (c) 2013 Oracle and/or its affiliates");
diff --git a/testcases/kernel/device-drivers/block/block_dev_user/block_dev.c b/testcases/kernel/device-drivers/block/block_dev_user/block_dev.c
index 543c36795cc3b2776c59141023e03ff2c58bd36a..9f87a88c9f9150ed1771616821d26e4982c55708 100644
--- a/testcases/kernel/device-drivers/block/block_dev_user/block_dev.c
+++ b/testcases/kernel/device-drivers/block/block_dev_user/block_dev.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved.
  *
@@ -26,74 +27,58 @@
 #include <unistd.h>
 #include <string.h>
 
-#include "test.h"
-#include "safe_macros.h"
-#include "old_module.h"
+#include "tst_test.h"
+#include "tst_module.h"
 
-char *TCID = "block_dev";
-int TST_TOTAL = 9;
+#define MODULE_NAME "ltp_block_dev"
+#define MODULE_NAME_KO	MODULE_NAME ".ko"
 
-static const char module_name[]	= "ltp_block_dev.ko";
 static const char dev_result[]	= "/sys/devices/ltp_block_dev/result";
 static const char dev_tcase[]	= "/sys/devices/ltp_block_dev/tcase";
-static int module_loaded;
 
-static int run_all_testcases;
-static const option_t options[] = {
-	{"a", &run_all_testcases, NULL},
+static int module_loaded;
+static char *run_all_testcases;
+static struct tst_option options[] = {
+	{"a",  &run_all_testcases, "-a\tRun all test-cases (can crash the kernel)"},
 	{NULL, NULL, NULL}
 };
 
 static void cleanup(void)
 {
 	if (module_loaded)
-		tst_module_unload(NULL, module_name);
-}
-
-static void help(void)
-{
-	printf("  -a      Run all test-cases (can crash the kernel)\n");
-}
-
-void setup(int argc, char *argv[])
-{
-	tst_parse_opts(argc, argv, options, help);
-
-	tst_require_root();
-
-	tst_sig(FORK, DEF_HANDLER, cleanup);
+		tst_module_unload(MODULE_NAME_KO);
 }
 
-static void test_run(void)
+static void run(unsigned int n)
 {
-	int off = 0;
 	/*
 	 * test-cases #8 and #9 can crash the kernel.
 	 * We have to wait for kernel fix where register_blkdev() &
 	 * unregister_blkdev() checks the input device name parameter
 	 * against NULL pointer.
 	 */
-	if (!run_all_testcases)
-		off = 2;
-
-	tst_module_load(cleanup, module_name, NULL);
-	module_loaded = 1;
-
-	int i, pass = 0;
-	for (i = 0; i < TST_TOTAL - off; ++i) {
-		SAFE_FILE_PRINTF(cleanup, dev_tcase, "%d", i + 1);
-		SAFE_FILE_SCANF(cleanup, dev_result, "%d", &pass);
-		tst_resm((pass) ? TPASS : TFAIL, "Test-case '%d'", i + 1);
+	n++;
+	if (!run_all_testcases && (n == 8 || n == 9)) {
+		tst_res(TCONF, "Skipped n = %d", n);
+		return;
 	}
-}
 
-int main(int argc, char *argv[])
-{
-	setup(argc, argv);
-
-	test_run();
+	if (!module_loaded) {
+		tst_module_load(MODULE_NAME_KO, NULL);
+		module_loaded = 1;
+	}
 
-	cleanup();
+	int pass = 0;
 
-	tst_exit();
+	SAFE_FILE_PRINTF(dev_tcase, "%d", n);
+	SAFE_FILE_SCANF(dev_result, "%d", &pass);
+	tst_res((pass) ? TPASS : TFAIL, "Test-case '%d'", n);
 }
+
+static struct tst_test test = {
+	.needs_root = 1,
+	.cleanup = cleanup,
+	.test = run,
+	.tcnt = 9,
+	.options = options,
+};

---
base-commit: 47aff4decc81ac837fd745278def6883fc2f197b
change-id: 20241018-block_dev-c322152e03ad

Best regards,
-- 
Ricardo B. Marliere <rbm@suse.com>